Sonnen eco 10, Installation And Commissioning Manual, Page: 31 / 65

23
Connecting PV Production Meter
The PV production meter, which the storage
unit uses to determine how much AC power is
available, is located inside the main cabinet on the
vertical main DIN rail. The current transformers
(CT) must be installed on the L1 and L2 outputs of
the PV inverter.
1. Current transformers (CT)
ATTENTION
Provided signal wires may not be
extended or modified in any way.
▶
Mount the current transformers in a location
with access to L1 and L2, provided signal wires
may not be modified in any way .
2. Connect current-measuring wires
The current-measuring wires are connected by
one end to terminal blocks on the main vertical
DIN rail. They are labeled on the unattached end
as follows:
• L1 CT S1
• L1 CT S2
• L2 CT S1
• L2 CT S2
Remove any wire ties or other attachments and
run them out of the top of the unit.
Fig. 41 Current transformer markings
▶
Run "L1" through current transformer "1".
Ensure the arrow is pointing towards the PV
inverter breaker on the load panel.
▶
Connect the wire labeled “L1 CT S1” to the S1
connection on the top of the L1 CT.
▶
Connect the wire labeled “L1 CT S2” to the
S2 connection on the top of the L1 CT.
Fig. 42 Current transformers S1 and S2
▶
Run "L2" through current transformer "2".
Ensure the arrow is pointing towards the PV
inverter breaker on the load panel.
▶
Connect the wire labeled “L2 CT S1” to the S1
connection on the top of the L2 CT.
▶
Connect the wire labeled “L2 CT S2” to the
S2 connection on the top of the L2 CT.